EP1491663A1 - Verfahren zur Herstellung von Polyester-Multifilamenten mit niedrigem Denier sowie Polyester-Multifilamentgarne mit niedrigem Denier - Google Patents

Verfahren zur Herstellung von Polyester-Multifilamenten mit niedrigem Denier sowie Polyester-Multifilamentgarne mit niedrigem Denier Download PDF

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Publication number
EP1491663A1
EP1491663A1 EP20030013448 EP03013448A EP1491663A1 EP 1491663 A1 EP1491663 A1 EP 1491663A1 EP 20030013448 EP20030013448 EP 20030013448 EP 03013448 A EP03013448 A EP 03013448A EP 1491663 A1 EP1491663 A1 EP 1491663A1
Authority
EP
European Patent Office
Prior art keywords
fine denier
polyester
quenching
orifice
denier multifilament
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20030013448
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English (en)
French (fr)
Inventor
Zo-Chun Jen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nan Ya Plastics Corp
Original Assignee
Nan Ya Plastics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nan Ya Plastics Corp filed Critical Nan Ya Plastics Corp
Priority to EP20030013448 priority Critical patent/EP1491663A1/de
Publication of EP1491663A1 publication Critical patent/EP1491663A1/de
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters

Definitions

  • This invention relates to a manufacturing method of polyester fine denier multifilament, polyester fine denier multifilament made from the same and polyester fine denier multifilament yarns.
  • Polyester fiber is mostly used among three major synthetic fiber owing to its good mechanical features, dyeability and low cost.
  • demands in hand softness and functionality is highly desired accompanied with application of fabrics in high grade dress material, woven fabrics knitted or woven from fine denier of d.p.f.(denier per filament) synthetic fiber such as polyester fiber and its fur-like fabrics.
  • Manufacturing process of polyester filament is approximately as follows: polycondensation reaction of terephthalic acid and ethylene glycol to form polyester chip or melt mass, after melting, extrusion, measuring and throughput, then quenching, oil finishing and winding up. In this process, the quenching effect of the polyester tow throughput after melt extrusion is very important to physical property and uniformity of yarn.
  • cross flow quenching system (as shown in figure 1). Radial out-to-in flow quenching system (as shown in figure 2). Radial in-to-out flow quenching system (as shown in figure 3).
  • the cross flow quenching system is mostly used, the radial out-to-in flow quenching system and radial in-to-out flow quenching system are frequently applied in staple, and partly used in industrial yarn production.
  • polyester fine denier multifilament yarns of d.p.f. below 0.3 d is made into cloth and fabric to reach the purpose of vapor permeation, water proof and pilling resistance to exhibit the outstanding effect.
  • There is a popularly adopted method to manufacture said filaments of d.p.f. less than 0.3 which use two-component melt spinning method, to manufacture filament of higher denier previously, then subject it to mechanical splitting or chemical splitting to form micro-fiber of d.p.f. less than 0.3.
  • cross flow quenching system For the quenching and blowing mode of polyester filament melt spinning quenching and blowing, cross flow quenching system is mainly adopted and supported with less out-to-in flow quenching system, of course, the quenching and blowing mode for melt spinning of existing polyester fine denier multifilament also mainly use these two modes, however, if cooled with the quenching unit of cross flow quenching system, it will lead to large quenching difference between the filament tow with single face exposed to the quenching air near the wind front and the filament tow far away from wind front.
  • a manufacturing method for d.p.f, less than 0.3 denier of polyester, polyamide, polyolefin filament is disclosed by controlling the melt viscosity less than 950 poises when spun, the temperature beneath the spinneret 1 ⁇ 3 cm is kept at less than 200°C, the quenching air is blown within 10 cm beneath the spinneret in the way of forming an angle 5° to 85° with horizontal line onto the filament tow. But this method can not spin stably due to the spinneret surface is apt to be affected by the quenching air to cause uneven temperature.
  • Radial out-to-in flow quenching system is designed to produce polyester industrial yarn with d.p.f. 1.1 to 22.2d, and fails to disclose the manufacturing process for polyester fine denier multifilament.
  • polyester polymer with specific intrinsic viscosity and melting point is uniformly throughput from spinneret with a multi-layer annularly arranged orifices (the diameter difference of outermost layer orifice and the innermost orifice is set at ⁇ 20mm), quenched by cylindrical quenching air tube with quenching air in-to-out radial blowing, wound and packaged into filament package to accomplish this invention.
  • Uster half inert value( u% 1/2 inert) less than 0.3 % and variation of thermal stress in spindles less than 2 % of polyester fine denier multifilament in this invention can be achieved by increasing the number in unit spinneret area set as 7-21 orifices per square centimeter. After draw texturing process, the polyester fine denier multifilament obtained has excellent dyeability and no dyeing streak in woven fabric.
  • polyester fine denier multifilament which is heating polyester polymer of inherent viscosity( IV) 0.5 ⁇ 0.7 and melting point of 245 ⁇ 265°C to melt, filter and extruding in constant amount to obtain polyester fine denier multifilament, characterized in comprising the following steps:
  • the other object of this invention is to provide a radial out-to-in flow quenching system of enabling uniform quenching for filament tow, to produce polyester fine denier multifilament.
  • the length of protective delay shroud below spinneret is preferably set at 2 to 20mm, when the length of protective delay shroud is less than 2 mm, the quenching air will influence surface temperature of spinneret, deteriorate production status, and the polyester fine denier multifilament obtained after draw texturing process has poor dyeability and dyeing streak in woven fabric; when the length of protective delay shroud is over 20 mm, the uster half inert value (u% 1/2 inert) of polyester fine denier multifilament becomes larger, even if increasing quenching air speed, it fails to meet the requirement for polyester fine denier multifilament with expected uster half inert value( u% 1/2 inert) less than 0.3%, and the finished fabric manufactured from the polyester fine denier multifilament after draw texturing process, has poor dyeability
  • the diameter difference of outermost layer orifice and the innermost layer orifice is set less than 20 mm; If the diameter difference of outermost layer orifice and the innermost layer orifice is greater than 20 mm, it will lead to larger quenching air difference between the inner and external filament tow, and large difference in physical property among monofilament inside filament tow, and fabric in excellent dyeability can not be achieved.
  • the distance between the diameter of innermost orifice layout and the diameter of quenching air tube is at least 12 and less than 33 mm.
  • the quenching air tube used in this invention is preferably set as 15 to 40 cm. when the length of quenching air tube is less than 15cm, the filament tow will be adhered and broken due to insufficient quenching; when the length of quenching air tube is greater than 40cm, turbulent flow will occur and deteriorate uster half inert value (u% 1/2 inert);
  • the quenching air tube used in this invention is a cylindrical shape, can be manufactured by multilayer cellulose or multilayer wire netting or filter sintered from metal or ceramic, or multilayer perforated plate ;
  • the filament tow can be obtained by blowing quenching air uniformly out in a way of radial in-to-out from fine holes of said quenching air tube.
  • the velocity of quenching air in this invention is preferably set as 0.2 m/sec to 0.6 cm/sec. when the velocity of quenching air is less than 0.2 m/min, the filament tow will be adhered and broken due to insufficient quenching, also accompanied by greater uster half inert value (u% 1/2 inert). When the velocity of quenching air is greater than 0.6 cm/sec, it fails to reduce the uster half inert value and do no evident improvement on uster half inert value, causing super quenching to break the filament tow.
  • the orifice density of spinneret layout is set as 7-21 orifices per square centimeter.
  • the orifice density( as shown in figure 5 ) is defined as the number of throughput orifices between D 2 ( the diameter of outermost layer orifice ) and D 1 (the diameter of inmost layer orifice) divided by area between D 2 and D 1 , i.e. the number of orifices (between D 2 and D 1 ) ⁇ 4/ ⁇ ⁇ ( D 2 2 - D 1 2 ).
  • the section of above mentioned spinneret orifice can be selected from one or more than one of the group of circular, hollow, Y type, - shape type, square shape, triangular shape, hexagonal shape, cross shape and C shape in the manufacturing method for polyester fine denier multifilament of this invention.
  • the inherent viscosity (IV) of polyester chip used in this invention is between 0.5 to 0.7, after melting, the polyester chip is extruded from spinneret to spin to form filament, then is subject to drawing, quenching, oil finishing and winding to get the polyester fine denier multifilament.
  • the polyester fine denier multifilament produced has elongation at break between100% to 160%, d.p.f. of 0.3 to 2.0, and uster half inert value (u% 1/2 inert) less than 0.3%; variation of thermal stress in spindles less than 2%. Consequently, polyester fine denier multifilament yarn with excellent dyeability and d.p.f. of 0.2 to 1.0 can be achieved after draw texturing such as draw twisting, air twisting or one stage direct spin drawing process (spin draw).
  • uster half inert value (u% 1/2 inert) can be calculated by using instrument.
  • the b is divided by c, the number of filament in filament tow to get d.p.f. (denier per filament).
  • Analyzing condition analyzing length 10 centimeters, drawing rate 60cm/ min. pre-load 0.5cN/tex. The strength is the maximum strength, and the corresponding elongation is elongation at break.
  • Fabric texture satin is woven by 75d / 36f textured yarn in warp with warp density of 150 strip per inch, and weft yarn manufactured by this invention with weft density regulated in d.p.f.
  • Dyeing and finishing condition using disperse dyestuff to dye for 130°C ⁇ 130min, after drying the dyed and finished fabric, checking if striation exists across wary under natural light.
  • quenching air is blown from one side to the filament tow throughput from the spinneret to cool said filament tow.
  • quenching air is blown radially from the wall of quenching air tube that surround the filament tow throughput from the spinneret, quenching air is blown to the center portion of said filament tow all around from said filament tow to cool said filament tow.
  • quenching air is blown radially from the wall of quenching air tube that locate at the center portion of the filament tow throughput from the spinneret, quenching air is blown to the surrounding of said filament tow from the center portion of said filament tow to cool said filament tow.
  • the quenching air tube has length Lq and outer diameter Do.
  • quenching air is blown radially from the wall of quenching air tube that locate at the center portion of the filament tow throughput from the spinneret, quenching air is blown to the surrounding of said filament tow from the center portion of said filament tow to cool said filament tow.
  • Polyester fine denier multifilament of circular section is made according to the condition listed in table 1, wherein radial in-to-out flow quenching system (as shown in figure 3) is used in example1 ⁇ 3 and comparative example 1, cross flow quenching system (as shown in figure 1) is used in comparative example 2-3 of this invention.
  • the length of protective delay shroud Ls (mm) used in comparative example 3 is set at 45 mm which is beyond the expected range of 2-20 mm, filament will collide each other seriously and not able to produce polyester fine denier multifilament.
  • Polyester fine denier multifilament of Y-shape section is made according to the condition listed in table 2, wherein radial in-to-out flow quenching system (as shown in figure 3) is used in example4 ⁇ 5, and cross flow quenching system (as shown in figure 1) is used in comparative example 4 ⁇ 5 of this invention.
EP20030013448 2003-06-23 2003-06-23 Verfahren zur Herstellung von Polyester-Multifilamenten mit niedrigem Denier sowie Polyester-Multifilamentgarne mit niedrigem Denier Withdrawn EP1491663A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20030013448 EP1491663A1 (de) 2003-06-23 2003-06-23 Verfahren zur Herstellung von Polyester-Multifilamenten mit niedrigem Denier sowie Polyester-Multifilamentgarne mit niedrigem Denier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030013448 EP1491663A1 (de) 2003-06-23 2003-06-23 Verfahren zur Herstellung von Polyester-Multifilamenten mit niedrigem Denier sowie Polyester-Multifilamentgarne mit niedrigem Denier

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EP1491663A1 true EP1491663A1 (de) 2004-12-29

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EP20030013448 Withdrawn EP1491663A1 (de) 2003-06-23 2003-06-23 Verfahren zur Herstellung von Polyester-Multifilamenten mit niedrigem Denier sowie Polyester-Multifilamentgarne mit niedrigem Denier

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014118080A1 (en) 2013-02-04 2014-08-07 Nv Bekaert Sa Quench tube for polymer fiber extrusion
CN115434021A (zh) * 2022-10-08 2022-12-06 无锡市兴盛新材料科技有限公司 一种优化冷却成形的短纤维直纺工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135811A (en) * 1960-11-18 1964-06-02 Ici Ltd Process and apparatus for uniformly cooling melt-spun filaments
US3259681A (en) * 1962-04-27 1966-07-05 Ici Ltd Polyester filaments
US4756679A (en) * 1985-09-18 1988-07-12 Ems-Inventa Ag Apparatus for cooling and conditioning melt-spun material
EP0349889A2 (de) * 1988-07-04 1990-01-10 Hoechst Aktiengesellschaft Spinnverfahren und Vorrichtung zur Durchführung desselben
WO1992015732A1 (de) * 1991-03-04 1992-09-17 Rhone-Poulenc Viscosuisse Sa Vorrichtung zum abkühlen von schmelzgesponnenen filamenten
EP0957187A2 (de) * 1998-05-14 1999-11-17 Ems-Inventa Ag Vorrichtung und Verfahren zur Herstellung von Mikrofilamenten von hoher Titer-Gleichmässigkeit aus thermoplastischen Polymeren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135811A (en) * 1960-11-18 1964-06-02 Ici Ltd Process and apparatus for uniformly cooling melt-spun filaments
US3259681A (en) * 1962-04-27 1966-07-05 Ici Ltd Polyester filaments
US4756679A (en) * 1985-09-18 1988-07-12 Ems-Inventa Ag Apparatus for cooling and conditioning melt-spun material
EP0349889A2 (de) * 1988-07-04 1990-01-10 Hoechst Aktiengesellschaft Spinnverfahren und Vorrichtung zur Durchführung desselben
WO1992015732A1 (de) * 1991-03-04 1992-09-17 Rhone-Poulenc Viscosuisse Sa Vorrichtung zum abkühlen von schmelzgesponnenen filamenten
EP0957187A2 (de) * 1998-05-14 1999-11-17 Ems-Inventa Ag Vorrichtung und Verfahren zur Herstellung von Mikrofilamenten von hoher Titer-Gleichmässigkeit aus thermoplastischen Polymeren

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014118080A1 (en) 2013-02-04 2014-08-07 Nv Bekaert Sa Quench tube for polymer fiber extrusion
CN115434021A (zh) * 2022-10-08 2022-12-06 无锡市兴盛新材料科技有限公司 一种优化冷却成形的短纤维直纺工艺
CN115434021B (zh) * 2022-10-08 2024-01-05 无锡市兴盛新材料科技有限公司 一种优化冷却成形的短纤维直纺工艺

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